Zinc Compounds and Reactions

The video tutorial explains how to predict the products of a chemical reaction between zinc metal and hydrochloric acid. It identifies the reaction as a single replacement reaction, where zinc displaces hydrogen to form zinc chloride and hydrogen gas. The tutorial also covers balancing the chemical equation and notes the solubility of zinc chloride. The video concludes with a brief summary and thanks to the viewers.

What type of reaction occurs between zinc metal and hydrochloric acid?

• Decomposition reaction

• Single replacement reaction

• Double replacement reaction

• Synthesis reaction

In a single replacement reaction involving zinc and hydrochloric acid, what gas is produced?

• Nitrogen

• Hydrogen

• Oxygen

• Chlorine

What is the chemical formula for the compound formed when zinc reacts with hydrochloric acid?

• Zn2Cl2

• Zn2Cl

• ZnCl

• ZnCl2

How many chloride ions are needed to balance the charge with one zinc ion in zinc chloride?

• Three

• Four

• One

• Two

What is the charge on a zinc ion in zinc chloride?

• 2-

• 1+

• 2+

• 1-

What is the balanced chemical equation for the reaction between zinc and hydrochloric acid?

• Zn + HCl → ZnCl + H2

• Zn + 2HCl → ZnCl2 + H2

• 2Zn + HCl → ZnCl2 + H2

• Zn + HCl2 → ZnCl2 + H2

Why is zinc chloride considered soluble in water?

• It forms a precipitate

• It reacts with water

• It is a gas

• It dissolves easily

What does the 'AQ' symbol indicate when written after a compound like zinc chloride?

• The compound is insoluble

• The compound is solid

• The compound is aqueous

• The compound is a gas